FIRMWARE VERSION 1.0.9.1 GXW40XX USER MANUAL Page 52 of 60
Default is No, If set to “Yes”, device will send an INVITE with audio vocoders upon
completition of Fax to continue session in audio only.
Enable Silence
Detection for Fax
Disconnect
For fax machines that do not send a Disconnect when fax is done. This option
Enables/Disables the detection of silence in order to know the fax has finished. The
silence period is non-configurable and fixed to 7 seconds.
Enables the use of PRACK (Provisional Acknowledgment) method.
Use First Matching
Vocoder in 200OK
SDP
Default is No. If set to “Yes”, device will include only the first match vocoder in its 200OK
response, otherwise it will include all match vocoders in same order received in INVITE.
The GXW40XX supports up to 5 different Vocoder types including G.711 A-/U-law, G.726
(Supports bit rates 16, 24, 32 and 40), G.723.1, G.729A/B/E and iLBC. The user can
configure Vocoders in a preference list that will be included with the same preference
order in SDP message. The first Vocoder is entered by choosing the appropriate option
in “Choice 1”. The last Vocoder is entered by choosing the appropriate option in “Choice
8”.
Default is 2, from 1 -4 for G711/G726/G729
Defines the encoding rate for G.723 vocoder. By default, 6.3kbps rate is chosen.
Sets the iLBC frame size in 20ms or 30ms
Default value is 97. Defines payload type for iLBC. The valid range is between 96 and
127.
AAL2-G726-16
Payload type
Default value is 100. Range is from 96 to 127.
AAL2-G726-24
Payload type
Default value is 99. Range is from 96 to 127.
AAL2-G726-32
Payload type
Default value is 104. Range is from 96 to 127.
AAL2-G726-40
Payload type
Default value is 103. Range is from 96 to 127.
Default value is 102. Range is from 96 to 127.
Default is No. VAD allows detecting the absence of audio and conserve bandwidth by
preventing the transmission of "silent packets" over the network.
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